Question

在seam-gen生成的应用程序中，在部署期间抛出以下异常：

ERROR [LoadMgr3] Not resheduling failed loading task, loadTask=org.jboss.mx.loading.ClassLoadingTask@8c5c9c{classname: org.jboss.seam.remoting.gwt.GWT14Service, requestingThread: Thread[ScannerThread,5,jboss], requestingClassLoader: org.jboss.mx.loading.UnifiedClassLoader3@3e4532{ url=f
ile:/C:/dev/jboss-4.3.0.GA/server/default/deploy/myapp.ear/ ,addedOrder=50}, loadedClass: nullnull, loadOrder: 2147483647, loadException: java.lang.NoClassDefFoundError: com/google/gwt/user/server/rpc/SerializationPolicyProvider, threadTaskCount: 0, state: 1, #CCE: 1}
java.lang.NoClassDefFoundError: com/google/gwt/user/server/rpc/SerializationPolicyProvider
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
...
        at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:421)
        at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:610)
        at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:263)
        at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.loop(AbstractDeploymentScanner.java:274)
        at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.run(AbstractDeploymentScanner.java:225)

问题（和解决方法）描述为here。由于我不使用gwt，我的问题是为什么在我不使用gwt时我有这种依赖性？

Seam版本2.1.2

编辑：仅供记录：在另一个解决方案可用之前，我在文件gwt-servlet.jar中添加了deployed-jars-ear.list，这样就可以满足部署扫描程序。

Answer 1

接缝的某些部分看起来只取决于gwt-servlet.jar的类。

请注意，你必须按原样使用它，并希望在接缝方面进行代码清理，因为即使你不使用gwt，你也需要在你的项目中添加'gwt'lib。这是令人惊讶的。

Answer 2

在这里你可以看到Ant Target负责复制Seam-gen使用的库

<target name="copy-lib" depends="copyseam, copyseamdependencies, copyjbossembedded, copy-icefaces-home, copy-icefaces-maven">
    <echo message="Copying Seam and dependencies to the ${project.home}/lib directory..."/>

    <copy todir="${project.home}/lib" overwrite="true">
        <fileset dir="${seam.dir}/lib">
            <exclude name="jsf-facelets.jar" if="icefaces.property"/>
            <exclude name="ajax4jsf*.jar" if="icefaces.property"/>
            <exclude name="richfaces*.jar" if="icefaces.property"/>
            <exclude name="jboss-container.jar"/>
            <exclude name="jboss-seam-wicket.jar"/>
            <exclude name="jboss-seam-resteasy.jar"/>
            <exclude name="test/jboss-deplyers.jar"/>
            <exclude name="test/jboss-embedded-api.jar"/>
            <exclude name="interop/**/*"/>
            <exclude name="gen/**/*"/>
        </fileset>
        <fileset file="${driver.jar}"/>
    </copy>

    <!-- we must use an endorsed jars directory containing JAXB 2.1 for running SeamTest under Java 6 -->
    <copy todir="${project.home}/lib/endorsed" file="${seam.dir}/lib/gen/jaxb-api.jar" overwrite="true"/>

    <echo message="Copying JBoss Embedded configuration to the ${project.home}/bootstrap directory..."/>
    <copy todir="${project.home}/bootstrap" overwrite="true">
        <fileset dir="${seam.dir}/bootstrap"/>
    </copy>

</target>

注意不排除 GWT库。但据我所知，Seam 并不依赖于 GWT库。因此，您可以设置自定义排除。 Here您可以看到Seam应用的外观。

Seam-gen使用的build.xml文件位于

＆LT; SEAM_HOME＆GT; /seam-gen/build.xml

Answer 3

事实上，检查我的seam项目，awt库是一些面部模块的内部依赖，你只需要确保将gwt-servlet-2.3.0.jar添加到你的

项目-ear.ear \ Project.war \ WEB-INF \ lib中

为什么我对gwt有依赖？

3 个答案: